History of the Peloponnesian War

Thucydides

Thucydides, Vol. 1-4. Smith, Charles Foster, translator. London and Cambridge, MA: Heinemann and Harvard University Press, 1919-1923.

But when he came close and the Athenians made no move whatever from within the walls, but sending out the cavalry and a portion of the hoplites, light-armed troops and bowmen, shot down some of his men in consequence of their approaching too near and got possession of a number of arms and dead bodies, he at length recognized his mistake and led back his army.

He himself, then, and his own troops remained at their post in Deceleia, but the reinforcements that had come he sent back home after they had remained a few days in Attica. After this the Four Hundred, notwithstanding their earlier experience, kept sending envoys to Agis, and as he now received them more readily and advised them to do so, they sent envoys also to Lacedaemon to negotiate an agreement, since they were now desirous of making peace.